From 7d3b7119123a57ca8381e68d453b47589ad33ec3 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Crist=C3=B3v=C3=A3o=20Cruz?= <cac@ua.pt>
Date: Wed, 7 Apr 2010 15:04:49 +0100
Subject: [PATCH] Introduced range and offset in sorter movement.

---
 funnysort.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/funnysort.c b/funnysort.c
index a590e97..06b6fb1 100644
--- a/funnysort.c
+++ b/funnysort.c
@@ -70,16 +70,23 @@ void move_sorter(board_t *board, sorter_t *sorter)
 	assert(sorter->column < board->width);
 	assert(sorter->line < board->height);
 
-	int h, v;
 	unsigned int newline, newcolumn;
 	unsigned int ncycles;
 	item_t item, sorter_item;
+	int h, hoffset, hrange;
+	int v, voffset, vrange;
+
+	// set default values to range and offset of random movement
+	hoffset = -1;
+	hrange = 3;
+	voffset = -1;
+	vrange = 3;
 
 	ncycles = 0;
 	do {
 		/* Select random displacement. */
-		h = random()%3 - 1;
-		v = random()%3 - 1;
+		h = random()%hrange + hoffset;
+		v = random()%vrange + voffset;
 
 		newline = (sorter->line + (h+board->height)) % board->height;
 		newcolumn = (sorter->column + (v+board->width)) % board->width;
-- 
2.11.4.GIT